<template>
  <div class="component-upload-image">
    <el-upload
      multiple
      ref="uploadImage"
      :action="uploadImgUrl"
      :list-type="isList ? 'picture' : 'picture-card'"
      :on-success="handleUploadSuccess"
      :before-upload="handleBeforeUpload"
      :limit="limit"
      :on-error="handleUploadError"
      :on-exceed="handleExceed"
      name="file"
      :on-remove="handleRemove"
      :show-file-list="true"
      :headers="headers"
      :auto-upload="false"
      :on-change="handleChange"
      :file-list="fileList"
      :data="uploadData"
      :on-progress="onProgress"
      :on-preview="handlePictureCardPreview"
      :class="{hide: this.fileList.length >= this.limit}"
    >
      <el-button size="small" type="primary" icon="el-icon-upload" v-if="isList">上传图⽚</el-button>
      <i class="el-icon-plus" v-else></i>
    </el-upload>

    <!-- 上传提示 -->
    <div class="el-upload__tip" slot="tip" v-if="showTip">
      请上传
      <template v-if="fileSize"> 大小不超过 <b style="color: #ea7474">{{ fileSize }}MB</b> </template>
      <template v-if="fileType"> 格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b> </template>
      的文件
    </div>

    <el-dialog
      :visible.sync="dialogVisible"
      title="预览"
      width="800"
      append-to-body
    >
      <img
        :src="dialogImageUrl"
        style="display: block; max-width: 100%; margin: 0 auto"
      />
    </el-dialog>
  </div>
</template>

<script>
import { getToken } from "@/utils/auth";
import { delFile } from '@/api/system/file'

export default {
  props: {
    deleteBanner: {
      type: Function,
      default: () => {},
    },
    handleUploadImage: {
      type: Function,
      default: () => {},
    },
    handleUploadImageList: {
      type: Function,
      default: () => {},
    },
    isList: {
      type: Boolean,
      default: false,
    },
    handleUpload: {
      type: Function,
      default: () => {},
    },
    uploadData: {
      type: Object,
      default: () => {
        return {
          bannerId: null
        };
      }
    },
    uploadFiles:{
      type: Function,
      default: () => {},
    },
    value: [String, Object, Array],
    // 图片数量限制
    limit: {
      type: Number,
      default: 5,
    },
    // 大小限制(MB)
    fileSize: {
      type: Number,
      default: 5,
    },
    // 文件类型, 例如['png', 'jpg', 'jpeg']
    fileType: {
      type: Array,
      default: () => ["png", "jpg", "jpeg"],
    },
    // 是否显示提示
    isShowTip: {
      type: Boolean,
      default: true
    },
    isDetails: {
      type: Boolean,
      default: false
    },
    isDetails1: {
      type: Boolean,
      default: false
    },

  },
  data() {
    return {
      number: 0,
      uploadList: [],
      dialogImageUrl: "",
      dialogVisible: false,
      hideUpload: false,
      baseUrl: process.env.VUE_APP_BASE_API,
      uploadImgUrl: process.env.VUE_APP_BASE_API + "/system/file/banner_file", // 上传的图片服务器地址
      headers: {
        Authorization: "Bearer " + getToken(),
      },
      fileList: []
    };
  },
  created() {
    if(this.isDetails){
      this.uploadImgUrl = process.env.VUE_APP_BASE_API + '/system/file/marks_file'
    }
    if(this.isDetails1){
      this.uploadImgUrl = process.env.VUE_APP_BASE_API + '/system/file/park_file'
    }

  },

  watch: {
    value: {
      handler(val) {
        if (val) {
          // 首先将值转为数组
          const list = Array.isArray(val) ? val : this.value.split(',');
          // 然后将数组转为对象数组
          this.fileList = list.map(item => {
            if (typeof item.path === "string") {
              item.path = { name: item.path, url: item.path,fileId:item.fileId };
            }
            return item.path;
          });
          console.log(this.fileList, 'fileList文件页面');
        } else {
          this.fileList = [];
          return [];
        }
      },
      deep: true,
      immediate: true
    }
  },

  computed: {
    // 是否显示提示
    showTip() {
      return this.isShowTip && (this.fileType || this.fileSize);
    },
  },
  methods: {
    onProgress(event, file, fileList) {
      console.log(event, file, fileList);
    },
    //手动上传图片
    handleSubmit() {
      return new Promise((resolve, reject) => {
        this.hideUpload = true;
        this.$refs.uploadImage.submit();
        console.log( "上传图片")
        resolve(true);
      }).then(() => {
        // this.hideUpload = false;
        // this.$refs.uploadImage.clearFiles();
      });
    },
    //清空图片
    clearImage() {
      this.fileList = []
      this.$refs.uploadImage.clearFiles();
    },
    // 删除图片
    handleRemove(file, fileList) {
      const findex = this.fileList.map(f => f.name).indexOf(file.name);
      if(findex > -1) {
        var fildId = this.fileList[findex].fileId
        delFile(fildId).then(res => {
          if(res.code == 200){
            this.fileList.splice(findex, 1);
            this.$message.success("删除成功！")
          }
        })
        console.log(this.fileList, '删除后的fileList')
      }
    },
    // 上传成功回调
    handleUploadSuccess(res) {
      this.uploadList.push({ name: res.fileName, url: res.fileName });
      console.log(this.number,this.uploadList.length,"this.uploadList.length")
      if (this.uploadList.length === this.number) {
        this.fileList = this.fileList.concat(this.uploadList);
        this.uploadList = [];
        this.number = 0;
        this.uploadFiles()
        this.$modal.closeLoading();
        console.log(this.fileList, 'fileList1111');
      }
    },
    handleChange(file,fileList) {
      console.log("上传图片了")
      if(!this.isList){
        this.handleUploadImage()
      }else{
        this.handleUploadImageList()
      }
      this.handleUpload(file)
    },
    // 上传前loading加载
    handleBeforeUpload(file) {
      let isImg = false;
      if (this.fileType.length) {
        let fileExtension = "";
        if (file.name.lastIndexOf(".") > -1) {
          fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
        }
        isImg = this.fileType.some(type => {
          if (file.type.indexOf(type) > -1) return true;
          if (fileExtension && fileExtension.indexOf(type) > -1) return true;
          return false;
        });
      } else {
        isImg = file.type.indexOf("image") > -1;
      }

      if (!isImg) {
        this.$modal.msgError(`文件格式不正确, 请上传${this.fileType.join("/")}图片格式文件!`);
        return false;
      }
      if (this.fileSize) {
        const isLt = file.size / 1024 / 1024 < this.fileSize;
        if (!isLt) {
          this.$modal.msgError(`上传头像图片大小不能超过 ${this.fileSize} MB!`);
          return false;
        }
      }
      this.$modal.loading("正在上传图片，请稍候...");
      this.number++;
    },
    // 文件个数超出
    handleExceed() {
      this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`);
    },
    // 上传失败
    handleUploadError() {
      this.$modal.msgError("上传图片失败，请重试");
      this.$modal.closeLoading();
    },
    // 预览
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url;
      this.dialogVisible = true;
    },
    // 对象转成指定字符串分隔
    listToString(list, separator) {
      let strs = "";
      separator = separator || ",";
      for (let i in list) {
        strs += list[i].url.replace(this.baseUrl, "") + separator;
      }
      return strs != '' ? strs.substr(0, strs.length - 1) : '';
    },
    closeModal(){
      this.dialogVisible = false
    }
  }
};
</script>
<style scoped lang="scss">
// .el-upload--picture-card 控制加号部分
::v-deep.hide .el-upload--picture-card {
  display: none;
}
// 去掉动画效果
::v-deep .el-list-enter-active,
::v-deep .el-list-leave-active {
  transition: all 0s;
}

::v-deep .el-list-enter, .el-list-leave-active {
  opacity: 0;
  transform: translateY(0);
}
</style>

